vt: fix memory overlapping when deleting chars in the buffer
Priority LOW 25CWE-787Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 16 fixed, 3 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: vt: fix memory overlapping when deleting chars in the buffer A memory overlapping copy occurs when deleting a long line. This memory overlapping copy can cause data corruption when scr_memcpyw is optimized to memcpy because memcpy does not ensure its behavior if the destination buffer overlaps with the source buffer. The line buffer is not always broken, because the memcpy utilizes the hardware acceleration, whose result is not deterministic. Fix this problem by using replacing the scr_memcpyw with scr_memmovew.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00278 20th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.312, 5.4.274, 5.10.132 +3Red Hat: 6 advisoriesRed Hat: 16 fixed, 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.7 and later | 4.19.312, 5.4.274, 5.10.132, 5.15.56, 5.18.13, 5.19 | Patch available | CNA |
- Linux VendorLinux Affected 3.7 and later Fixed in 4.19.312, 5.4.274, 5.10.132, 5.15.56, 5.18.13, 5.19 Patch available CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.7 – 4.19.312; 4.20 to before 5.4.274; 5.5 to before 5.10.132; 5.11 to before 5.15.56; 5.16 to before 5.18.13 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:* | 5.19 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:* | 5.19 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:* | 5.19 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:* | 5.19 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:* | 5.19 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc6:*:*:*:*:*:* | 5.19 rc6 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.7 – 4.19.312; 4.20 to before 5.4.274; 5.5 to before 5.10.132; 5.11 to before 5.15.56; 5.16 to before 5.18.13 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:* Versions 5.19 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:* Versions 5.19 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:* Versions 5.19 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:* Versions 5.19 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:* Versions 5.19 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc6:*:*:*:*:*:* Versions 5.19 rc6 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.312, 5.4.274, 5.10.132, 5.15.56, 5.18.13, 5.19
Red Hat 6 advisories
- RHSA-2024:5255 Released 2024-08-13 · Red Hat rating Importantkernel security update
- Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.67.1.el8_8
- Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.67.1.el8_8, kernel-4.18.0-477.67.1.el8_8, kernel-abi-stablelists-4.18.0-477.67.1.el8_8 +19
- RHSA-2024:4583 Released 2024-07-17 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.26.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.26.1.el9_4, kernel-64k-devel-5.14.0-427.26.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.26.1.el9_4, kernel-5.14.0-427.26.1.el9_4, kernel-64k-5.14.0-427.26.1.el9_4 +29
- Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.26.1.el9_4, libperf-5.14.0-427.26.1.el9_4
- Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.26.1.el9_4, kernel-rt-core-5.14.0-427.26.1.el9_4, kernel-rt-debug-5.14.0-427.26.1.el9_4 +11
- Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.26.1.el9_4, kernel-rt-core-5.14.0-427.26.1.el9_4, kernel-rt-debug-5.14.0-427.26.1.el9_4 +9
- RHSA-2024:4554 Released 2024-07-15 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.73.1.rt14.358.el9_2, kernel-rt-core-5.14.0-284.73.1.rt14.358.el9_2, kernel-rt-debug-5.14.0-284.73.1.rt14.358.el9_2 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.73.1.rt14.358.el9_2, kernel-rt-core-5.14.0-284.73.1.rt14.358.el9_2, kernel-rt-debug-5.14.0-284.73.1.rt14.358.el9_2 +11
Show 3 more Red Hat advisories
- RHSA-2024:4533 Released 2024-07-15 · Red Hat rating Importantkernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.73.1.el9_2
- Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.73.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.73.1.el9_2, kernel-64k-devel-5.14.0-284.73.1.el9_2 +9
- Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.73.1.el9_2, kernel-5.14.0-284.73.1.el9_2, kernel-64k-5.14.0-284.73.1.el9_2 +29
- RHSA-2024:3627 Released 2024-06-05 · Red Hat rating Moderatekernel-rt security and bug fix update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-core-4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-debug-4.18.0-553.5.1.rt7.346.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-core-4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-debug-4.18.0-553.5.1.rt7.346.el8_10 +7
- RHSA-2024:3618 Released 2024-06-05 · Red Hat rating Moderatekernel update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.5.1.el8_10, kernel-4.18.0-553.5.1.el8_10, kernel-abi-stablelists-4.18.0-553.5.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.5.1.el8_10
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat CodeReady Linux Builder EUS (v.8.8) | Fixed | RHSA-2024:5255 |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:4533 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:4583 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:4533 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:3618 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:4583 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.8) | Fixed | RHSA-2024:5255 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.2) | Fixed | RHSA-2024:4533 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:3618 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:4583 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:3627 |
| Red Hat Enterprise Linux NFV (v. 9) | Fixed | RHSA-2024:4583 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:3627 |
| Red Hat Enterprise Linux RT (v. 9) | Fixed | RHSA-2024:4583 |
| Red Hat Enterprise Linux Real Time EUS (v.9.2) | Fixed | RHSA-2024:4554 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) | Fixed | RHSA-2024:4554 |
Not affected: 2 products
- Red Hat Enterprise Linux AppStream EUS (v.9.2)
- Red Hat Enterprise Linux BaseOS EUS (v.8.8)
Timeline
- 2026-10-02 Threatist record created from CVE-2022-48627
- 2026-10-03 Alias added: GHSA-73f5-wqmw-37vp
References
Patch 6
- https://git.kernel.org/stable/c/c8686c014b5e872ba7e334f33ca553f14446fc29
- https://git.kernel.org/stable/c/815be99d934e3292906536275f2b8d5131cdf52c
- https://git.kernel.org/stable/c/bfee93c9a6c395f9aa62268f1cedf64999844926
- https://git.kernel.org/stable/c/57964a5710252bc82fe22d9fa98c180c58c20244
- https://git.kernel.org/stable/c/14d2cc21ca622310babf373e3a8f0b40acfe8265
- https://git.kernel.org/stable/c/39cdb68c64d84e71a4a717000b6e5de208ee60cc
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- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
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- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2022-48627 · CVE Program
- CVE-2022-48627 · NVD
- FIRST EPSS
- GHSA-73f5-wqmw-37vp · GitHub Advisory Database · CC BY 4.0
- CVE-2022-48627 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences